Updated git submodules

Project: aai/aai-common master 20bc1683e3935ccaae2d4452e62cf9179fbce24a

AAI-1638 Update device schema to support IPv4/IPv6

Issue-ID: AAI-1638
Update device with system-ipv4 and system-ipv6.
For compatibility, keep system-ip as previously published, but plan to
deprecate and remove it.

Change-Id: I740a58d4e4125983fc09af48bd0b4ba786af77f1
Signed-off-by: Keong Lim <keong.lim@huawei.com>
AAI-1637 Update EdgeRules for sdwan-vpn

Issue-ID: AAI-1637
Update EdgeRules for sdwan-vpn to tenant and to vpn-binding

Change-Id: Ifab3416bf98f716ee69f2355c65a11ef1642d1e3
Signed-off-by: Keong Lim <keong.lim@huawei.com>

diff --git a/docs/submodules/aai/aai-common.git b/docs/submodules/aai/aai-common.git
index 378cf91..20bc168 160000 (submodule)
--- a/docs/submodules/aai/aai-common.git
+++ b/docs/submodules/aai/aai-common.git
@@ -1 +1 @@
-Subproject commit 378cf91e1653a7f9be693f8bf0fc10998b6b1eeb
+Subproject commit 20bc1683e3935ccaae2d4452e62cf9179fbce24a